# Using ParallelCompositeReader in ElasticSearch

**URL:** <https://discuss.elastic.co/t/using-parallelcompositereader-in-elasticsearch/168329>\
**Category:** Elasticsearch\
**Created:** [February 14, 2019, 4:02am UTC](https://discuss.elastic.co/t/using-parallelcompositereader-in-elasticsearch/168329 "2019-02-14T04:02:55Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![dextermorgan](https://avatars.discourse-cdn.com/v4/letter/d/65b543/32.png) [@dextermorgan](https://discuss.elastic.co/u/dextermorgan)\
**Post date:** [February 14, 2019, 4:02am UTC](https://discuss.elastic.co/t/using-parallelcompositereader-in-elasticsearch/168329/1 "2019-02-14T04:02:55Z")

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Has anyone ever tried using Lucene's ParallelCompositeReader ? My use case is that I have few of frequently updating fields in an index and want to keep them as a separate index and use ParallelCompositeReader. I am in ES 5.4.

Thanks in advance

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [March 14, 2019, 4:02am UTC](https://discuss.elastic.co/t/using-parallelcompositereader-in-elasticsearch/168329/2 "2019-03-14T04:02:56Z")

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Closed on March 14, 2019, 4:02am UTC

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